Avalia？？o e tratamento do doente com acne - Parte I: Epidemiologia, etiopatogenia, clínica, classifica？？o, impacto psicossocial, mitos e realidades, diagnóstico diferencial e estudos complementares

the portuguese acne advisory board (paab), a group of portuguese dermatologists with a special interest in acne, develop, as other international groups in this field, consensus recommendations for the treatment of acne. overall, the goal is to provide a practice guideline to all physicians dealing with this entity. the continuing medical education dossier was divided in two parts: part i - etiopathogeny and clinical features; part ii - therapy. this part i reviews acne pathophysiology, clinical aspects, psychological and social impact and several myths surrounding this disease. some other entities relevant for the differential diagnosis are described. the need of hormonal evaluation is also discussed.